Puccinia tsinlingensis
| Puccinia tsinlingensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia tsinlingensis | ||||||||||||
| Wang |
Puccinia tsinlingensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of bristles . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to China .
features
Macroscopic features
Puccinia tsinlingensis can only be recognized with the naked eye by means of the spore beds emerging on the surface of the host. They grow in nests that appear as yellowish to brown spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Puccinia tsinlingensis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Aecia or spermogonia of the species are not known. The yellow-brown uredia of the fungus grow on both sides, mostly on top of the host leaves. Its orange uredospores are 41–58 × 17–23 µm in size, mostly spherical and finely spiky. The branches of the species growing on both sides, mostly on the upper side of the leaves, are blackish and long covered. The hazelnut-brown teliospores are two-celled, elongated to club-shaped and 41–58 × 17–23 µm in size. Their stalk is yellowish and up to 18 µm long.
distribution
The known distribution area of Puccinia tsinlingensis only includes China .
ecology
The host plants of Puccinia tsinlingensis are various bristles ( Bromus spp.). The fungus feeds on the nutrients present in the storage tissue of the plants, its spore beds later break through the leaf surface and release spores. The species has a development cycle of which only Telien and Uredien and their host are known; Spermogonia and aecia could not be assigned to the fungus.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .